/Engine/Source/Editor/UnrealEd/Public/GraphEditor.h
Active GraphEditor wrappers; we will notify these about the module being unloaded so they can handle it gracefully.
static [TArray](API\Runtime\Core\Containers\TArray)< [TWeakPtr](API\Runtime\Core\Templates\TWeakPtr)< [SGraphEditor](API\Editor\UnrealEd\SGraphEditor) > > AllInstances;